The full inside story of Senna's Indycar test

This week marks the 25th anniversary of Ayrton Senna's 1992 Penske test in Arizona. To mark the occasion, here's an Autosport feature from earlier this year - the full story of the "amazing" occasion, told by the men who were there

Paul Tracy was in pole position for a full-time drive with Team Penske for the 1993 Indycar season. But when he arrived for a test at Firebird International Raceway in December '92, he still didn't have the deal confirmed.

Just days earlier the legendary Rick Mears had announced his retirement from the cockpit at the Penske Christmas party, so Tracy, who had raced Mears's car on occasions in '92 as part of a schedule that took in 11 of the 16 events, was optimistic. Then two limousines arrived at Firebird, and out stepped Formula 1 world champion royalty.